142447450 has 12 divisors (see below), whose sum is σ = 264952350. Its totient is φ = 56978960.

The previous prime is 142447429. The next prime is 142447451. The reversal of 142447450 is 54744241.

It can be written as a sum of positive squares in 3 ways, for example, as 92871769 + 49575681 = 9637^2 + 7041^2 .

It is not an unprimeable number, because it can be changed into a prime (142447451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1424425 + ... + 1424524.

Almost surely, 2^142447450 is an apocalyptic number.

142447450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142447450 is a deficient number, since it is larger than the sum of its proper divisors (122504900).

142447450 is a wasteful number, since it uses less digits than its factorization.

142447450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848961 (or 2848956 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 142447450 is about 11935.1351060639. The cubic root of 142447450 is about 522.2577496243.

The spelling of 142447450 in words is "one hundred forty-two million, four hundred forty-seven thousand, four hundred fifty".